Burner cap structure



511E}! 3951 F. J. PORT ETAL 25%03841 BURNER CAP STRUCTURE Filed March 24, 1947 The burner pipe maybe Patented July 17, 1951 BURNER CAP STRUCTURE ago, John R. Hall, Elm- Turner, Chicago, 111., as-

Frederick J. Port, Chic burst, and Charles L.

signors to Cribben an d Sexton Company, Chicago, 111., a corporation of Illinois Application March 24, 1947, Serial No. 736,776 4 Claims. (01. 158116) This invention relates to a burner structure and more particularly to a burner cap or cover employed with a burner pipe.

An object of the invention is to provide a burner cap or cover of unique and highly efilcient construction providing burner ports and connecting ribbon flame. Yet another object is to provide a burner cover or cap formed of sheet metal parts and providing burner ports and narrow slots for a ribbon flame connecting the burner ports. Still another object is to provide a pair of stamped plates of a configuration spaced radial burner ports with fan-shaped narrow ports connecting them, the plates being formed of sheet metal and connected to provide an inexpensive but highly effective burner cap, the cap being useful as the cap of a main burner or as the cap of a simmer or small burner. Other objects and advantages will appear as the specification proceeds.

The invention is illustrated, in a preferredembodiment, by the accompanying drawing, in which Fig. 1 is a broken perspective view of a burner cap or cover embodying our invention; Fig. 2, a top plan view; Fig. 3, a sectional view of the top plate employed, the section being taken as indicated at line 3 of Fig. 2; Fig. 4, a top plan view of the lower plate employed, the plate being shown with straight flanges prior to their attachment to the burner pipe; Fig. 5, a transverse sectional view of the lower plate, the second being taken as indicated at line 5 of Figure 4; Fig. 6, a

side view in the elevation of the assembly cap or cover attached to the burner pipe; and Fig. 7, a transverse sectional view of the structure shown in Fig. 6.

In the illustration given I designates a burner pipe which may be of any suitable construction. provided with a bead II as shown best in Fig.7.

The new burner cap or cover preferably comprises two plates, a lower plate I2 and an upper plate I3. The plates may be connected by a rivet I4, by spot welding or by any other suitable means.

Both of the plates I2 and I3 may be stamped from sheet metal such as steel or any other suitable metal.

The lower plate I2 is preferably upwardly dished centrally as indicated by the numeral I5 and is provided with radially extending channels I6 communicating with the central chamber provided by the upwardly dished wall l5. Between the radial channels I6, the wall of the plate I5 extends downwardly and provides fan-shaped depressions or areas II. The walls I! are preferably extended and form depending flanges I8 which may be pressed inwardly around the bead II to lock the cap upon the pipe III, as shown best in Fig. '7.

The upper plate I2 is also provided with an upwardly dished central portion I9 and with laterally extending channels 20. Between the channels extend the downwardly spaced and fanshaped webs 2!. The recess formed by the upwardly dished wall I9 is slightly greater than the recess formed by the upwardly dished wall I5 of the lower plate so that it will receive the dished portion I5, as shown best in Fig. 7. The channel portion 20 rests upon the channel I6 of the lower plate, as illustrated in Fig. 6, and the depressed web 2I of the upper plate extends downwardly over the wall I1 of the lower plate to form a narrow chamber 22 between the two plates. The

2 fan-shaped chamber 22 provided between each of the channels It communicates with the inner chamber of the lower plate by means of a small aperture 23 extending through the downwardly inclined portion of the lower plate which joins the plateau I5 and the lower stepped portions I1.

The fan-shaped chamber 22 formed between each of the channels I6 provides a relatively thin or narrow chamber or slot through which a ribbon of flame will be projected so as to connect the main burner channels I6. With the structure shown, the fanshaped chambers 22 are aligned with the central portion of the burner ports I6 so that the flame discharged therefrom will be in alignment with the center of the flame projected through the channel ports I6.

The plates I2 and I3 are shown provided with aligned openings 24 and 25 and may be connected by a rivet M, as illustrated in Fig. 7. If desired, the plates may be imperforate and may be secured centrally by spot welding, etc.

Operation In the operation of the device, the cap or cover is assembled by bringing the two plates I2 and I3 together and securing them by the rivet I4 or by other means. In the assembling operation the upper plate I3 receives the raised portion of the lower plate I2 and with the channels 20 of the upper plate resting upon the channels it of the lower plate. The webs 2| and I I of the two plates provide a narrow slot or chamber 22 which is arcuate and which is connected to the central chamber of the lower plate by the apertures 23. The depending flanges I 8 of the lower plate I2 are crimped around the bead ll of the burner pipe It.

The air and gas mixture passing through the pipe H3 is discharged laterally through the main burner ports E6 to form the burner flames. A

ribbon flame connecting-the channel flames ,is providedzby. each of the 'fan shaped chambers 22. to which the gaseous mixture is supplied through ports 23. chambers 22 serves to kee ports 18 always ignited and The ribbon flame p the main channel forthis' purpose they; 1. are highly effective becausev ofthe alignment of,

from the arcuate portion and communicating with said fanshaped upper spaces, an upper plate extending over said lower plate and having walls above said fan-shaped spaces to form chambers therewith, said chambers being horizontally aligned .with said. channe1s,..and. means .securing said plates together.

the ribbon flames with'thecentral portion-of the channels I 6.

While in the description given, ewe have shown two sheet metal members,

it will be understood that a single sheet metal plate may be employed, the plate being spaced from provide the thin slot between the channel ports. The plate structure may be secured upon the pipe not only by the by securing the plate or plates-t "the central portion of the pipe. provide aburner structure Essentially, it is desired to having laterally-extending burner ports, with at least one sheet metal member providing with the structure thin ribbon flame outlets extending between burner ports.

The'new'strueture'is extremely simple, inex-Q pensive, and highly eflicient.

the

It is useful as a simmer cap'burner or as a main'burner.

While in the foregoing specification we have set forth one embodiment'of the invention in great detail for the'purpose vention, itwill be understood that such details.

may be varied widely by th of illustrating the in os'e skilled in the art the-burnerpipe to means described, but also 3. A burner cap adapted to be secured upon a burner pipe, and comprising a pair of sheet metal plates secured together, the lower of said plates having an upwardly-dished central portion surrounded by an edge portion in which "upwardly press'ed radial channels are formed,

for securing them together.

4. A burner cap adapted toibe' secured upon a burner pipe and comprising a pair or sheet metal plates secured together, the lower of said withoutfdeparting from" the spirit ofour invention.

We claim: ,1. In combination with a burner pipe'f'a b'urner pipe cover comprising-a lower plate having an upwardly'dished central portion surrounded by an edge portion radial channels are ing also fan-shaped spaces in, which upwardly pressed formed, said plate providbetween the saidv channels, an upper plate "extending over said second plate and providing shaped spaces to. formwalls above said fanchambers therebetween v.alignedin a horizontal planewith said channels,

said lower plate having spaced openings therethrough in said dished central portion. for providing communication. between the interior of said dished centralportion with said chambers,

and means connecting said upper and lower v plates.

2. In combination, a bur ner. pipe cover, comprising a lower plate having any upwardly-dished central portion in which upwardly-pressed formed, said plate providing between said chan- 6 nels fan-shaped upper spaces, said plate having V openings extending throug surrounded by an edge portion radial channels are h its dished central plates having an upwardly-dished"central portion surrounded by an "'edgeportioniin' which upwardly-pressed radial channels "are formed, said plate also providing 'famshaped'spaces between said channels. and ihav'ing' fo'penings through its dished central'portionfftdprovide communication ,with said spaces and the interior of said dished. central" piortionfthe' upper of said plates shaving radial chann; s'Testing upon the channels of said lower pl ingv also a' dependirl'g wan portio'nflextending above the 'fan-sl'i'ape d wall" spaces ofsaid lower plate to provide chambers there between, and means extending through central portions of said plates for securing them 'Ttogeth'er, said lower plate 'having anependin'g skirt' portion adapted to "telescopically;engage afjb FREDERICK PORT.

" I fJorm RJ HALL.

" "TTJRNER.

REFERENCE'SCITED The following: references areaoftrecord in the file of this patent:

i l UNITED STATES ZPATENTS Number Name pate 2,023,624 Tullis e "De"c. .10, 1935 'iJ-FOREIGN=-PATENTS Number Country pate 337,882 Germany June""9, 1921 448,052: Germany 1 i1Aug; 2, 1927 

